Well there are lots of different times as to when he phoned Julie. Bamber wasn't even sure if he phoned her before or after the police.
He phoned himself around 3am.
So Susan Battersby's evidence is wrong now? How convenient for you, to leave the times open like that; but we do have a definite book-end, because PC West must have taken Jeremy's call no later than 3.25 a.m., probably 3.24 a.m.
Let's see:
He phones himself at 3 a.m.
We're now disregarding Susan Battersby's evidence. She must have been lying.
We'll err on the side of the prosecution and say he cycled back to the cottage in reasonably quick order. DI Wilson managed it in 16 minutes during daylight. How about 25 minutes?
He then composes himself, but wait, he needs to ring the police.
It's now 3.27 a.m. He should have been speaking with PC West three minutes ago, and he first has to ring two other police numbers and he also needs to ring Julie.
Oh dear.
OK. Let's say he cycles there in 20 minutes. Then it becomes just about possible, but it means he only has minutes to make multiple phone calls and compose and collect himself, etc., etc.
To me, this doesn't add up. Or rather, it only adds up if you shave more time off his cycle journey between the crime scene and the cottage. Shall we say 17 minutes? But it took DI Wilkinson 16 minutes in daylight.
It remains doubtful he could have done this. Sorry.